Napoli's head coach Maurizio Sarri looks on before the UEFA Europa League football match between SSC Napoli and RB Leipzig, on February 22, 2018 in Leipzig. Pic/AFP

Maurizio Sarri warned Juventus that their days of Serie A domination were numbered as Napoli switched their focus to winning a first league title in nearly 30 years after their European exit. "In Italy, in the last six years nobody has ever fought it out with Juventus," said the Napoli coach after winning 2-0 in Leipzig on Thursday night but losing their Europa League last 32 tie 3-3 on away goals.